Propagating Echinodorus paniculatus (Amazon Sword)

A beginner-friendly guide to multiplying the classic Amazon sword using adventitious plantlets on its submerged flower stalk and by dividing the crown and rhizome.

Overview

Echinodorus paniculatus is a large, traditional Amazon sword with elongated lanceolate leaves, one of the original swords before the bleherae rename. It grows as a perennial rosette and, like other Echinodorus, can grow submersed, emersed or seasonally. Mature plants form a crown and develop a rhizome that can carry new plantlets.

This is a forgiving, beginner-friendly species, but it is still a heavy root feeder. Echinodorus plants prefer good light and grow best in a deep, nutrient-rich substrate, and these conditions also encourage the flowering stems used for propagation.

Propagation Method

Echinodorus propagation is by division or by adventitious new plants developing on submerged flowering stems. A large sword will send up a flower stalk; on the submersed section adventitious plantlets grow, and if the inflorescence forms submersed, small plantlets form instead of flowers. The maturing rhizome can also be divided.

Step-by-Step

Let a mature plant produce a flowering stem and keep that stem submersed.
Adventitious plantlets will grow along the submerged part of the stalk; let each form leaves and roots in the water.
When a plantlet has a root system, remove it from the stalk and plant it in nutrient-rich substrate.
Once all plantlets have been removed, cut away the spent stalk.
To divide the rhizome: when trimming old leaves, cut off a rhizome section that carries a crown or new plantlets.
Replant each piece with roots in deep substrate and the crown sitting above the soil.

Conditions for Healthy Growth

Deep, nutrient-rich substrate to satisfy this heavy root feeder.
Good light to drive growth and flowering.
Warm tropical temperatures (roughly 22-28 C).
Soft to moderately hard water around neutral pH; CO2 is not required.

Maintenance

Remove old or damaged outer leaves at the base so light reaches the crown and new growth. Top up root nutrients periodically. Leave a flowering stalk in place until its plantlets have rooted and been separated, then trim it off at the base.

Common Challenges

Detaching plantlets too early before roots form, which causes them to melt - wait for roots.
Poor or yellowing growth in a thin substrate - feed the roots.
Burying the crown too deep after division, which prevents rooting - keep the crown above the substrate.